What happens if the auto balance system cannot maintain a balance of less than 30 pounds within 2 minutes?

If the auto balance system cannot maintain a balance of less than 30 pounds within a two-minute time frame, the system is designed to respond in a controlled manner to prevent further issues. One of the responses is that the FUEL BAL annunciator will illuminate, which serves as a warning to the pilot that the fuel balance is outside of the acceptable parameters. This alert helps ensure that the pilot is aware of the situation and can take necessary actions.

Additionally, the system will shut off to prevent further complications or potential damage due to sustained imbalance. This dual response—activation of the FUEL BAL warning and the system shutoff—ensures that the aircraft remains within safe operational limits while alerting the pilot to the problem. This coordinated approach is crucial for maintaining safety and operational integrity in flight.